Twyer.



G. D. GULDEN.

TWYER.

APPLICATION minv JULY x9, 1916.

atemed June 12, 1917.'

@S ATNT @FFIQEO GEORGE D. GOLDEN, 0F CLRKDALE, ARIZONA.

TWYER.

weones.

To all whom t may concern.'

Be it known that I, GEORGE D. GOLDEN, a citizen of the United States,residing at Clarkdale, in the county of Yavapaiand State of Arizona,have invented certain new and useful Improvements in Twyers; and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

This invention relates to improvements in twyers for converters, blastand other furnaces.

The invention has for its primary object to provide an improved twyerembodying a quickly and easily removable blast conducting elementremovably supported in the main tube of the twyer, the inner tube beingadapted for removal independently of the twyer so as to prevent injuryto the wall of the converter shell.

With these and other objects in view, the invention .consists in thenovel construction, combination and arrangement of parts as 4will behereinafter specifically described,

claimed and illustrated in the accompanying drawings, in which:

Figure 1 represents an enlarged sectional view through the twyer showinga fragment of the body of a converter,

Fig. 2 represents a vertical sectional view on the line 4-4 of Fig. 1,

Fig. 3 represents a detail sectional view on the line 5-5 of Fig. 1, and

Fig. 4 represents a fragmental perspective view of the removable tuberemoved.

Referring to the drawings in detail', wherein similar reference numeralsdesig* nate corresponding parts throughout the several views, thenumeral 8 indicates a fragment of the body of a well known converter ofthe tilting or oscillating type.

The wind box 14 of the converter is connected by a plurality of pipeconnections 15 with the twyers, designated generally by the numerals 16.Each twyer includes a hollow body 17 ,having an open outer end normallyclosed by a removable plate 18 secured in position by bolts 19 andprovided with a poke hole 20 normally closed to prevent the escape ofthe air from the body by a valve 21. The inner wall of the hollow body17 is formed integral with the main blast conducting tube 22, whichextends through the Specification of Letters Patent.

Patented J une 112, 1191*?.

llpplication filed July 19, 1916. Serial No. 110,141.,

wall 8 of the converter and a supporting plate 23 secured to theconverter wall.

An inner or auxiliary blast conducting tube 24 is arranged within themain tube 22 -and the outer extremity thereof is slit, as indicated at25. The inner tube 24 is arrangedin concentrically spaced relationthroughout its entire length to the main tube 22, thereby providing anair space between the tubes, and the inner end of the inner tube, whichis disposed within the body 8 of the converter, terminates in proximityto the inner end of the main tube 22. The slit end of the innertube 24is curved outwardly to provide stop shoulders 26, adapted for engagementwith the inner face vof the inner wall of the hollow body 17, and theportions of the tube lying outwardly of the shoulders 26 are extended'along the side walls of the twyer body, as clearly illustrated in Figs.4 and 5. The flat portions 27 of the inner tube 24 are engaged at theirouter terminals by the removable plate 18, which, when advanced toproper position with relation to the twyer body 17 firmly clamps theshoulders 26 against the inner wall of the twyer body, thereby firmlysecuring the inner or auxiliary blast conducting tube in spacedconcentric relation to the main tube 22. The plates 27 are formed withapertures 28 adapted to receive a suitable pointed tool to facilitateremoval of the auxiliary tube from the outer or main tube.

In use, the outer terminal of the tube 22 of converter twyer very oftenbecomes choked with metal, due to accidental stopping of the air blastand under such conditions the molten metal quickly freezes, thus closingup the outer end` of the blast conducting tube necessitates the removalof the latter. l/Vith my improved twyer when it becomes necessary toclean or open the inner end of the twyer tube the removable plate 18 isremoved and the inner tube 24 removed and replaced by a new one, thuseliminating the necessity of removing the outer or main tube 22 and theconsequent injury to the brick lining of the converter; The spacebetween the main tube 22 and the inner tube 24, from end to end of thelatter, permits a circulation of air about the inner tube and thusretains the latter in a relatively cool condition. It is furtherevident, owing to the fact that the inner end of the inner tube 24terminates in proximity to the adjacent end of the outer or main tube22, that the frozen metal when poked from the inner end of the tube 24breaks off along the edge of the inner end of the main tube 22, therebypreventing the frozen metal from being torn away from and injuring thelining of the converter body 8.

What is claimed is:

l. In a twyer structure, a hollow body havin an open outer end, aremovable closure for said open end, a main blast conducting tubeconnected with said body, and an auxiliary blast conducting tube havingits outer end apertured and extended into proximity to the closure tofacilitate removal of the auxiliary blast conducting tube through theopen end of the body.

2. In a twyer structure, a hollow body, a main blast conducting tubeconnected therewith, and an auxiliary blast conducting tube removablysupported in the first-mentioned tube and disposed in spaced relationfrom end to end of the latter to provide an air chamber.

3. In a twyer structure, a hollow body, a main blast conducting tubeconnected therewith, and an auxiliary blast conducting tube arrangedwithin the main blast conducting tube and terminating, at its inner end,in proximity to the adjacent end of the main blast tube.

4. In a twyer structure, a hollow body, a main blast conducting tubeconnected there-l with, a removable plate associated with said hollowbody, and an auxiliary blast conducting tube removably positioned in theErst-mentioned tube and secured in position by said plate. y

5. In a twyer structure, a hollow body, a tubular blast conductingmember connected with said body, a removable plate associated with saidhollow body, and an auxiliary blast conducting tube associated with saidtubular member arranged in concentrically spaced relation within thelatter and being secured in position by said removable plate.

6. In a twyer structure, a hollow body, a

blast conducting tube connected therewith, an auxiliary main blastconducting tube arranged in concentrically spaced relation with thefirst-mentioned tube and having a portion thereof disposed within thehollow body split and apertured to facilitate removal thereof, and meanssecuring said auxiliary tube in position in said body.

7 In a twyer structure, a hollow body, a main blast'conducting tubeconnected therewith, an auxiliary blast conducting -tube supported inconcentrically spaced relation within the iirst-mentioned tube andhaving one end split and extended within said housing', the splitterminals of said tube being apertured to facilitate removal thereof,and a removable plate associated with said housing and removablysecuring the auxiliary tube in position within the main tube.

8. In a twyer structure, a hollow body having an open outer end, a mainblast conducting tube connected therewith, an auxiliary blast conductingtube arranged within the first-mentioned blast conducting tube andremovable outwardly through the open outer end of said body, and aclosure for the open end of said body securing the auxiliary blastconducting tube in position in the main blast conducting tube.

9. In a twyer structure, a hollow body having an open outer end, a mainblast con-

